WhatsApp is working on a new feature which is now available in its Android beta channel: reverse image search. Basically, what this does is let you quickly search online for an image you've been sent, thus verifying its authenticity if you need to. It's a very straightforward feature. Once you tap on an image you've received, in the three-dots menu at the top right will be a new entry: Search on web. This will upload the image to Google and the search engine will then present you with identical and similar images, so you can get a better idea of how trustworthy what you've been sent...
Source: https://www.gsmarena.com/whatsapp_will_get_reverse_image_search-news-65210.php
